Abstract: Brewing method in which a suspension of cereals having undergone traditional mashing is boiled in the same kettle as that in which mashing is carrier out, with no hops present. Filtration in the method of the invention is carried out using a thin filter bed, i.e. a filter bed with a thickness between 20 mm and 60 mm, preferably on the order of 40 mm. The method is preferably carried out in an installation that includes a mash tub and at least one and preferably two or three kettles in which mashing and boiling takes place, the kettles being followed by a filter and preferably by a buffer tank and then by a cooler.